Neat venture you have there, by the way - social reservations, I like it! I just did the Craigslist thing in Budapest a couple of years ago (before we moved more permanently) and it worked out nicely - but I think we got lucky. A little more triangulation would have been nice, and it looks like that's what you're doing. Neat!
It's funny you label it as social reservations.
Did you see this page? http://www.adormo.com
because we also launched a test project (italan only for now) http://social.adormo.com/ where it's much more social.
I just wonder what site you did visit :)